燃气轨流道设计及仿真计算  

Design and Simulation of Gas Rail Passage

作　　者：葛坚 彭阳 李慧 郭雅楠 Ge Jian;Peng Yang;Li Hui;Guo Ya-nan(Henan Diesel Engine Industry Co.,Ltd,Luoyang,Henan 471039)

机构地区：[1]河南柴油机重工有限责任公司,河南洛阳471039

出　　处：《内燃机与配件》2022年第24期41-44,共4页Internal Combustion Engine & Parts

摘　　要：LNG/CNG船用气体机为了提高动态响应特性,采用中压(7barA)进气歧管多点喷射技术,提高燃气喷射量随转速、负载的响应速度,同时还可以通过避开气阀重叠角喷射,减少甲烷的排放。燃气轨流道设计计算成为多点喷射气体机(MPI)关键技术参数,此次按照理论数值计算、仿真计算相结合的方法进行燃气轨流道设计计算,建立燃气轨流道设计流程。为了简化计算模型,同时对燃气喷射阀流道进行等效直径计算。In order to improve the dynamic response characteristics of LNG/CNG marine gas engine, the medium pressure(7 barA) intake manifold multi-point injection technology is adopted to improve the response speed of gas injection with speed and load. At the same time,methane emission can be reduced by avoiding the overlapping angle injection of gas valve. The design and calculation of gas rail channel has become a key technical parameter of multi-point injection gas engine(MPI). This time,the design and calculation of gas rail channel are carried out according to the method of combining theoretical numerical calculation and simulation calculation,and the design process of gas rail channel is established.In order to simplify the calculation model,the equivalent diameter of the flow passage of the gas injection valve is calculated at the same time.

关 键 词：多点喷射 船用气体机 燃气轨流道 燃气喷射阀 等效直径 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]